Spindle lock



April 1943- R. B. SWARENS ET AL 2,316,493

- SPINDLE LOCK Filed Aug. ll, 1941 Patented Apr. 13, 1943 2,s1,49s SPINDLE Loon Roy Bell Swarens, ErnestF. Attula, and Harry Stuart Molony, Los Angeles, Calif., assignors to Pacific Plastic & Manufacturing Company, Inc., Los Angeles, Calif., a corporation of California Application August 11, 1941, Serial No. 406,310

5 Claims. (o1. zoo-"35.9)

This invention relates to looks for door closures and more particularly to locking devices for use in connection with latch bolts operated by turning a door knob or handle upon either side of a door.

In such structures, operable from either side of the door, it is frequently desired that means be provided upon one side of the door only for looking the mechanism against operation from the other side. This is particularly true of the inner side of bathroom doors, but the utility of such devices, and this invention, is not limited to such uses.

The present invention is designed foruse with any type latch in which a bolt is retracted by means of a spindle extending transversely of the bolt, but primarily it is designed for use with a nonmortise type latch.

It is one object of this invention to provide locking means for the spindle of such'a latch which is small and compact, being assembled directly with the rose-plate and knob usually associated with said spindle, but which is positive and secure in action.

It is another object of this invention to provide such a locking mechanism which operates directly upon the latch spindle itself, avoiding the necessity of secondary locking bolts or latches.

provided having a raised circular portion 12 stamped thereon and within which the spindle locking mechanism per so may be secured.

A lever I3 is provided upon a shaft M, which extends through the escutcheon l l for operation of the spindle lock.

The spindle locking mechanism, illustrated in Figs. 2 and 3, includes a circular plate l5, having a plurality of holes I 6 adapted to align with holes I! in escutcheon II and be secured therein by suitable screws or bolts. Holes I8 are also provided in plate l5 for securing said plate to the door by means of suitable screws, if'desired.

The plate I5 is preferably formed by stamping and will have a central raised portion IS. A hole 20 is punched in disk 15 and a disk 2| is mounted over said hole 29. Said disk 2| is formed with a circular flange adapted to fit within hole 20 and the inner end of said flange is upset to retain said disk and flange for rotation in said hole 29. If desired a washer 22 may be inserted upon the flange of disk 2| upon the inner end and beneath the upset portions. Said upset portions and washer will lie entirely within the inner side of the raised portion [9.

A dogging mechanism 23 is slidably mounted upon plate 15 and secured thereto'by means of ears 24 punched from plate l5. The disk 2| is basically circular in form but is provided with two outstanding portions 25 of increased radius. The dogging mechanism 23 has an opening 26 therein generally circular in form but having at its upper'end a projection 21 designed to fit requiringa minimum of initial motion and pro locked by means of the present invention. The

spindle it will be understood to operate a latch of any suitable design and to retract the closure bolt. Door knobs (not shown) are to be mounted on either side of the door upon opposite ends of the spindle It. An escutcheon or rose-plate II is within the space 28 between the outstanding portions 25 of disk 2|. A stop 29 is stamped from-plate l5.

A cam shaped disk 30 is provided and secured to the plate IS, in line with a hole 3| therein, by means of a flange and upset portion 32 and a disk 33 similar to the method of securing disk 2| The disk 2| is provided with a squared'aperture 34 to fit spindle l0 while the disk 30 is provided with a squared aperture 35 to fit shaft l4.

Dogging mechanism 23 contains an irregular opening 36 adapted to receive cam disk 30. Cam disk 30 includes a rounded extension 3'! for which dogging mechanism 23 includes a complementary-recess 38. Above the recess 38 there is a rounded projection 39. Dogging mechanism 23 includes a circular recess 40 above which is a projection. Cam disk 30 includes a projection 42 rounded at its lower end but having a substantially straight upper end for engagement with projection 4|. Above projection 39 there is provided a recess 43.

A boss 44 is provided on plate 15 around which is crimped one end of a spring 45. A stop 46 engages the crimped end of spring 45 and retains it upon boss 44. The spring 45 has its other end extending inside the lower right hand ear 24 and bears laterally upon the dogging mechanism 23.

The shaft I 4 may be provided with a notch 41 in which case the shaft I4 will lie in a hole drilled in the door and the notch 41 will be engageable from the outside of the door, through said hole, for emergency unlocking of the door.

The operation of the device is as follows:

In its open or unlatched position the dogging member 23 will be as shown in Fig. 3. The disk 2| will be free to rotate in the opening 26, restrained only by the stop 29. Hence the spindle I may be turned by the knobs to unlatch the door. Upon closing and latching of the door, however, the disk 2| will assume the position shown in Fig. 1. With the disk 2| so disposed, a turning of the lever l3 will actuate, through the shaft I4, the cam disk 30. As the cam disk 30 is turned counterclockwise (Fig. 3), the dogging member 23, and especially the lower portion thereof, will first swing towards the right against the force of spring 45. When projection 31 passes by projection 39, the rounded surface of projection 42 will engage the wall 50 of the opening 36, thereby depressing the dogging mechanism and bringing projection 21 into the space 28 and securely locking spindle I0 agm'nst rotation, as shown in Fig. 2. The surface 50 may include a small rounded projection 50a to increase the motion of the dogging member 23 under the above described motion of the cam disk 30.

With the mechanism looked, as shown in Fig. 2, a clockwise rotation of the cam disk 30 will first swing the lower .end of the dogging member 23 to the right, as projection 31 passes projection 39, and then as the straightened top edge of projection 42 engages projection 4!, the dogging mechanism will be urged upwardly to open position, as in Fig. 3.

In view of the force of spring 45, the dogging member '23 will often be forced open with a snap, as soon as the upper surface of projection 37 engages the lower surface of projection 39. In any event, the combined actions above described insure a quick and positive unlocking of the spindle I3 upon clockwise rotation of the cam disk 30.

From the foregoing description, it will be seen that we have provided .a spindle lock adapted to be assembled integrally with the rose or escutcheon plate and thereby retained securely in alignment and which is quick and positive of action, requiring a minimum of motion in the activating elements to completely lock or unlock-the device.

While the particular forms of the invention herein described are well adapted to carry out the objects of the invention, it is to be understood that various modifications and changes may be made without departing from the principles of the invention, and the invention includes all such modifications and changes as come within the scope of the appended claims.

We claim:

1. .A spindle locking mechanism comprising a plate, a disk mounted upon said plate and engaging said spindle, a dogging mechanism slidably mounted upon said plate and surrounding said disk, an aperture in said dogging mechanism adapted to allow free rotation of said disk, a notch in said disk and 2. lug upon said dogging mechanism adapted to engage said notch in dogging engagement, and a cam member mounted on said plate and engaging said dogging mechanism for movement of said dogging mechanism into and out of dogging engagement with said disk.

2. In a spindle locking mechanism, the combination of a plate, a spindle engaging disk rotatably mounted upon said plate, a dogging mechanism sildably mounted upon said plate for limited movement thereon, a plurality of upstanding bars upon said plate for retaining said dogging mechanism thereon, a spring bearing against one side of said dogging mechanism, a cam mounted upon said plate and engaging said dogging mechanism, said dogging mechanism in one position engaging said disk and looking it against rotation and in another position freeing said disk for rotation, said cam upon rotation moving said dogging mechanism first laterally against the force of said spring and then longitudinally whereby said dogging mechanism is shifted from one of said positions to the other of said positions with a minimum required movement of said cam.

3. A spindle locking mechanism comprising a plate, a disk mounted upon said plate and engaging said spindle, a dogging mechanism slidably mounted upon said plate and surrounding said disk, an aperture in said dogging mechanism adapted to allow free rotation of said disk, a notch in said disk and a lug upon said dogging mechanism adapted to engage said notch in dogging engagement, a spring bearing against one side of said dogging mechanism, and a cam member engaging said dogging mechanism and upon rotation moving said dogging mechanism first laterally against the force of said spring and then longitudinally whereby said dogging mechanism is shifted into or out of dogging engagement with a minimum required movement of said cam member.

4. In a spindle locking mechanism, the combination of a plate having an aperture therein, a disk mounted in said plate for rotation thereon and having a spindle engaging aperture aligned with said first mentioned aperture, a dogging member slidably mounted upon said plate, a second aperture in said plate, a cam member mounted for rotation upon said plate and having a shaft engaging aperture aligned with said second aperture, said dogging member in one position engaging said disk and restraining said disk against rotation and in another position freeing said disk for rotation, a spring bearing against one side of'said dogging member, said cam member engaging said dogging member and being adapted upon rotation in one direction to slide said dogging member into dogging position and upon rotation in the other direction to slide said dogging member into free position, said cam member upon rotation moving said dogging member first laterally against the force of said spring and then longitudinally whereby said dogging member is shifted from one position to the other with a minimum required movement of said cam member, a shaft engaged by said cam member, and a lever upon said shaft for rotation of said cam.

5. In a spindle locking mechanism of the type having a spindle engaging disk and a slidably mounted dogging member adapted to selectively dogging member is shifted from one position to the other with a minimum required movement of said cam.

ROY BELL SWARENS. ERNEST F. ATTULA. HARRY STUART MOLONY. 

